461561020 has 24 divisors (see below), whose sum is σ = 969789744. Its totient is φ = 184526976.

The previous prime is 461560993. The next prime is 461561021. The reversal of 461561020 is 20165164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461561021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42024 + ... + 51856.

It is an arithmetic number, because the mean of its divisors is an integer number (40407906).

Almost surely, 2^461561020 is an apocalyptic number.

It is an amenable number.

461561020 is an abundant number, since it is smaller than the sum of its proper divisors (508228724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

461561020 is a wasteful number, since it uses less digits than its factorization.

461561020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12189 (or 12187 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 461561020 is about 21483.9712343877. The cubic root of 461561020 is about 772.8164802620.

The spelling of 461561020 in words is "four hundred sixty-one million, five hundred sixty-one thousand, twenty".